Shader Stripping
Fog Of War compiles its full-screen fog into many shader variants (one per appearance look and feature keyword). Stripping the variants you don't use trims build size and shader compile time — a worthwhile build-time optimization.
Stripping is configured on the editor-only FOW_ShaderConfig asset: enable a toggle to strip that appearance look or feature variant from builds.
Warning
Only strip variants you will never use at runtime. If you switch fog appearance or toggle features at runtime (e.g. via SetFowAppearance), keep those variants — a stripped variant won't render in the player build.
Full reference: Configuration → Shader Config → Shader Stripping.